Nassau County and Oyster Bay Town property record for 5 Knowles St, Plainview, NY 11803 · Last verified June 2026
| Property Type | Residential > Single Family > Home |
|---|---|
| Bathrooms | 2.5 Baths |
| Year Built | Built 1957 |
| Square Footage | 1,600 sqft Living Area |
| Lot Size | 7,150 sqft (0.164 acres) |
| Garage | Attached, 77 sqft |
| Pool | 405 sqft |
| Occupancy | Owner Occupied |
| Tax Bill | $6,504.00 (2025) |
| Primary APN | 12-554-00-0021 |
|---|---|
| Alternative APNs |
|
| Full Baths | 2.5 Baths |
|---|---|
| Partial Baths | 1 Partial Baths |
| Total Rooms | 6 Rooms |
| Building Area | 1,600 sqft Living Area |
| Gross Area | 1,677 sqft Gross Area |
| 1st Floor | 1,053 sqft 1st Floor |
| Basement Area | 364 sqft Basement |
| Finished Basement | 364 sqft Finished |
| Stories | 1 Stories |
| Year Built | Built 1957 |
|---|---|
| Effective Year Built | Effective 1957 |
| Architectural Style | Split Level Style |
| Exterior Material | Aluminum/Vinyl Exterior |
| Construction Type | Frame Construction |
| Roof Material | Other (not Classified) Roof |
| Lot Area | 7,150 sqft (0.164 acres) |
| Depth X Width | 110 ft x 65 ft Depth x Width |
| Parking Spaces | 1 Parking Spaces |
| Garage Type | Attached Garage |
| Garage Area | 77 sqft Garage |
| Pool Area | 405 sqft Pool |
|---|---|
| Balcony Area | 78 sqft Balcony |
| Patio Area | 120 sqft Patio |
| Porch Area | 301 sqft Porch |
| Cooling System | Central Cooling |
|---|---|
| Heating System | Central Heating |
| Heating Fuel | Oil Heating Fuel |
| Sewage | Municipal Sewage |
| Water Source | Commercial Water Source |
| Account Number | 12554 00210 |
|---|---|
| Street Address | 5 KNOWLES ST |
| City | PLAINVIEW |
| State | NY |
| Zip | 11803-3925 |
| Property Usage | Residential Property Usage |
| Type | Residential > Single Family > Home |
| Legal Description | TOWN #3 SCH DIST 019 |
| Legal Block | 554 |
| Legal Lot Number | 21 |
| Jurisdiction | NASSAU NY |
| Minor Civil Division | OYSTER BAY |
| Census Blockgroup | 3 |
| Census Block | 3009 |
| Census Tract | 519704 |
Source: Nassau County and Oyster Bay Town records · APN 12-554-00-0021
Assessment roll updated June 17, 2026 · Last verified June 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 5 KNOWLES ST, PLAINVIEW, NY 11803-3925 |
| Occupancy | Owner Occupied |
| Owner Type | Owner is an Individual, Couple or Unincorporated Entity |
| Deed Names | Verified Name on Deed |
|---|---|
| Record Refreshed | Sep 20, 2026 |
Source: Nassau County and Oyster Bay Town records · Assessment roll updated June 17, 2026 · Last verified June 2026
| Type | Name |
|---|---|
| State | New York |
| County | Nassau County |
| County Subdivision | Oyster Bay Town |
| Unified School District | Plainview-Old Bethpage Central School District (KG - 12) |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $541 (-3.05%) Land $254 Building $287 | $541,000 (-3.05%) | |
| 2025 | $6,504.00 (-47.54%) | ||
| 2023 | $12,397.00 Homeowner's exemption | $558 Land $262 Building $296 | $558,000 |
Source: FEMA National Flood Hazard Layer, Nassau County (36059C), updated April 5, 2023 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026
| FEMA Flood Zone | Zone X |
|---|---|
| Flood Hazard | Minimal |
| 500-Year Floodplain | No |
| Special Flood Hazard Area | No |
| Wildfire Risk | Not rated no burnable land in reach |
|---|---|
| Wildfire Likelihood | Negligible |
| Exposure | None beyond ember reach |
Values are read at the parcel center point; lenders make the official flood determination.
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